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Quantum algorithm for preparing the ground state of a system via resonance transition.
Hefeng Wang1,2
1Department of Applied Physics, Xi'an Jiaotong University, Xi'an, 710049, China. wanghf@mail.xjtu.edu.cn.
Scientific Reports
|November 29, 2017
Summary
We present a novel quantum algorithm to efficiently prepare the ground state of physical systems. This method uses an ancillary qubit and iterative measurements for convergence, applicable to quantum computation resources.
Area of Science:
- Quantum Physics
- Computational Physics
Background:
- Preparing ground states is crucial in quantum physics.
- Quantum simulations require efficient ground state preparation methods.
Purpose of the Study:
- To propose a new quantum algorithm for ground state preparation.
- To demonstrate its applicability to physical systems simulable on quantum computers.
Main Methods:
- Coupling the system to an ancillary qubit.
- Utilizing a resonance mechanism between the ancilla and the system.
- Employing iterative measurements on the ancilla qubit.
Main Results:
- The proposed algorithm ensures monotonic convergence to the ground state.
- Simulated application to the Afflect-Kennedy-Lieb-Tasaki model was successful.
- The prepared ground state is a valuable resource for one-way quantum computation.
Conclusions:
- The developed quantum algorithm offers an effective approach for ground state preparation.
- This method has practical implications for quantum computation and simulation.
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